Question

Which sticky trap can be used to detect infestation of adult white flies?

• A. Red
• B. Blue
• C. Green
• D. Yellow

Hint:

Remember pest monitoring traps:
- Whiteflies: Yellow sticky traps
- Aphids: Yellow sticky traps
- Thrips: Blue sticky traps
- Leaf miners: Yellow sticky traps
- Fruit flies: Yellow traps with pheromone
- Moths: Pheromone traps
Yellow is the most common color for insect traps.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
This question tests knowledge of pest monitoring tools in agriculture.

Step 2: Detailed Explanation:
Yellow sticky traps are used to detect and monitor adult whitefly infestation.
Whiteflies (Bemisia tabaci, Trialeurodes vaporariorum) are strongly attracted to yellow color.
Why yellow?
- Whiteflies are phototactic (attracted to light).
- Yellow reflects light in the spectrum that attracts whiteflies.
- It mimics the color of young leaves (their preferred feeding sites).
Other pests and trap colors:
- Aphids: Yellow traps also work.
- Thrips: Blue sticky traps.
- Fruit flies: Yellow traps with pheromone.
- Leaf miners: Yellow sticky traps.
Thus, yellow sticky traps are most effective for whitefly detection.

Step 3: Final Answer:
Thus, yellow sticky traps are used to detect adult whiteflies, which corresponds to option (D).
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